9.8

CVE-2024-21413

Warning
Exploit

Microsoft Outlook Remote Code Execution Vulnerability

Data is provided by the National Vulnerability Database (NVD)
Microsoft365 Apps Version- SwEditionenterprise
MicrosoftOffice Version2016 Edition- SwEdition- HwPlatform-
MicrosoftOffice Version2019

06.02.2025: CISA Known Exploited Vulnerabilities (KEV) Catalog

Microsoft Outlook Improper Input Validation Vulnerability

Vulnerability

Microsoft Outlook contains an improper input validation vulnerability that allows for remote code execution. Successful exploitation of this vulnerability would allow an attacker to bypass the Office Protected View and open in editing mode rather than protected mode.

Description

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Required actions
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 93.75% 0.998
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
secure@microsoft.com 9.8 3.9 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.